Answers

Yes, its possible, but why B, there is C, and soon FP4 will be released i would wait for that and go with FP4 :), and this could be done ofcourse without uninstalling windows, unless You wanna 'switch' to 64bit architecture :)

i am using 5.1 RevA and want to Upgrade to RevC as i am facing problems with my AC800M controllers, i cant do the full system upgradation as it need Plant shutdown, so i just wanted to update Engg StudioAC800M Connectand CBM

i want to do this only on my engineering Stations not in servers.will it create any trouble if dont istall other components like Base, CLS etc..after installation will it force me to download the new firmware to the controllers because i can do the firmware upgradation only during shutdown.

i want to do all this during plant running, will there be any problem ???

Hey, if you want an answer, it's better to ask a question! Anyway there is no shutdown needed for the upgrade if you have a fully redundant system, but Controllers need to be restarted if you want to upgrade the Firmware. Using Software from different Revisions together is not tested and totally unsupported so really not an option for anything but a test system.

we recently migrated one system to last version Rev C, the migration is automatic start program, it appears one window, that explain all the instructions you need to follow.

in the process you need to stop all the system, this is one of the first steps, and then the system uninstall some components and reinstall the new ones, after you need to do the same process in all the nodes.